前回までで「BirdHead」を遊べるようにした。
今回からは「BirdHead」の思考ルーチンを作っていく。
ランダムAI
まずは一番簡単なところから。
合法手からランダムにアクションを選択するだけの、ランダムAI。
//============================== // BirdHead //------------------------------ // RandomCom.swift //============================== import Foundation class RandomCom: Player { private(set) var name: String private(set) var isCom: Bool init(name: String) { self.name = name self.isCom = true } func select(view: GameInfo.PlayerView) throws -> Action { let legalActions = view.legalActions let action = legalActions[Random.getUniformedRandom(legalActions.count)] return action } }
Playerプロトコルに準拠するようにして、Player#select()を実装した。
ただ、学習はしないので、Player#learn()はデフォルトの実装を使っている。
実行例
試しにランダムAI同士で対戦させてみる。
import Foundation let deck = Deck() let game = GameInfo(deck: deck, playerCount: 4) let players: [Player] = [ RandomCom(name: "Random Com 1"), RandomCom(name: "Random Com 2"), RandomCom(name: "Random Com 3"), RandomCom(name: "Random Com 4"), ] let controller = GameController(gameInfo: game, players: players) controller.output = true try! controller.start()
ビルドして実行すると、次のような感じ。
-------------------- deal... ---------- [Random Com 1] selected action: Play([8]) [Random Com 2] selected action: Play([10]) [Random Com 3] selected action: Discard([4]) [Random Com 4] selected action: Play([11]) ---------- trick 0 is done. Random Com 4 takes trick. ---------- [Random Com 4] selected action: Play([7]) [Random Com 1] selected action: Discard([2]) [Random Com 2] selected action: Discard([3]) [Random Com 3] selected action: Play([11]) ---------- trick 1 is done. Random Com 3 takes trick. ---------- [Random Com 3] selected action: Play([8]) [Random Com 4] selected action: Play([8]) [Random Com 1] selected action: Discard([2]) [Random Com 2] selected action: Discard([3]) ---------- trick 2 is done. Random Com 4 takes trick. ---------- [Random Com 4] selected action: Play([4]) [Random Com 1] selected action: Play([10]) [Random Com 2] selected action: Discard([3]) [Random Com 3] selected action: Play([11]) ---------- trick 3 is done. Random Com 3 takes trick. ---------- [Random Com 3] selected action: Play([4]) [Random Com 4] selected action: Play([6]) [Random Com 1] selected action: Play([6]) [Random Com 2] selected action: Play([6]) ---------- trick 4 is done. Random Com 2 takes trick. ---------- [Random Com 2] selected action: Play([5]) [Random Com 3] selected action: Play([6]) [Random Com 4] selected action: Play([7]) [Random Com 1] selected action: Play([9]) ---------- trick 5 is done. Random Com 1 takes trick. ---------- [Random Com 1] selected action: Play([9]) [Random Com 2] selected action: Discard([3]) [Random Com 3] selected action: Discard([5]) [Random Com 4] selected action: Play([10]) ---------- trick 6 is done. Random Com 4 takes trick. ---------- [Random Com 4] selected action: Play([9]) [Random Com 1] selected action: Play([10]) [Random Com 2] selected action: Discard([4]) [Random Com 3] selected action: Discard([5]) ---------- trick 7 is done. Random Com 1 takes trick. ---------- [Random Com 1] selected action: Play([6]) [Random Com 2] selected action: Discard([4]) [Random Com 3] selected action: Play([9]) [Random Com 4] selected action: Discard([2]) ---------- trick 8 is done. Random Com 3 takes trick. ---------- deal is done. last cards: Random Com 1: 7 Random Com 2: 5 Random Com 3: 8 Random Com 4: 7 ["Random Com 3"] lose in deal. minus points: Random Com 1: [] Random Com 2: [] Random Com 3: [8] Random Com 4: [] -------------------- deal... 〜省略〜 -------------------- deal... ---------- [Random Com 2] selected action: Play([5]) [Random Com 3] selected action: Play([7]) [Random Com 4] selected action: Play([11]) [Random Com 1] selected action: Discard([2]) ---------- trick 0 is done. Random Com 4 takes trick. ---------- [Random Com 4] selected action: Play([4, 4]) [Random Com 1] selected action: Play([5, 6]) [Random Com 2] selected action: Play([9, 9]) [Random Com 3] selected action: Discard([2, 2]) ---------- trick 1 is done. Random Com 2 takes trick. ---------- [Random Com 2] selected action: Play([3, 3]) [Random Com 3] selected action: Play([5, 9]) [Random Com 4] selected action: Discard([3, 5]) [Random Com 1] selected action: Play([6, 10]) ---------- trick 2 is done. Random Com 1 takes trick. ---------- [Random Com 1] selected action: Play([11]) [Random Com 2] selected action: Play([11]) [Random Com 3] selected action: Discard([2]) [Random Com 4] selected action: Discard([6]) ---------- trick 3 is done. Random Com 2 takes trick. ---------- [Random Com 2] selected action: Play([7, 7]) [Random Com 3] selected action: Discard([3, 4]) [Random Com 4] selected action: Discard([6, 8]) [Random Com 1] selected action: Discard([3, 4]) ---------- trick 4 is done. Random Com 2 takes trick. ---------- [Random Com 2] selected action: Play([4]) [Random Com 3] selected action: Play([6]) [Random Com 4] selected action: Play([10]) [Random Com 1] selected action: Play([10]) ---------- trick 5 is done. Random Com 1 takes trick. ---------- deal is done. last cards: Random Com 1: 7 Random Com 2: 10 Random Com 3: 8 Random Com 4: 8 ["Random Com 2"] lose in deal. minus points: Random Com 1: [9, 8] Random Com 2: [9, 11, 10] Random Com 3: [8] Random Com 4: [10] -------------------- game ended. total minus points: Random Com 1: 17 Random Com 2: 30 Random Com 3: 8 Random Com 4: 10 ["Random Com 2"] lose.
まぁ、とりあえずプレイは出来てる、というレベル。
（といっても、手札が見えているわけではないので、評価は難しいけど）
一番最後のディールの5トリック目と最後のカードを見てみると、Random Com 2は手札が4, 10の状態で4をリードしていたり、Random Com 3も手札が6, 8の状態で6をプレイしていたり、ランダムに手を選択するんだと、こんなことも出てくるよなぁ、と。
ということで、次はもうちょいまともなAIを考えていく。
今日はここまで！
